Protector for water-gages.



F. W. EDWARDS.

PROTECTOR TOR WATER OAOES.

APPLICATION FILED JULY 5.1917.

Patented July 16, 1918.

2 SHEETS-SHEET l.

F. W. EDWARDS.

PROTECTOR Ton WATER (TAGES.

ION FILED JULY 1917 A 1,272,640, Patented July 16,1918.

2 EEEEEEEEEEEE 2.

FRANK W. EDWARDS, OIE CHICAGO, ILLINOIS7 ASSIGNOR T0 THE OHIO INJECTORCOM- PANY OF ILLINOIS, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

PROTECTOR FOR WATER-GAGES.

Specification of Letters Patent.

Patented. July 16, 19518.

Application filed July 5, 1917. Serial No. 178,656. y

To all whom t may concern.' i

Be it known that I, FRANK W. EDWARDS, a citizen of the United States, residing at Chicago in the county of Cook and State of Illinois, have invented f aY certain new and useful Improvement in- Protectors kfor Water-Gages, of which the following is a full, clear, and exact description. Y

rlhis invention relates to means for inclos.- ing the glass tubes of water gages for use on steam boilers in such manner that in the event 'of the breaking of the tube the flying glass and escaping steam cannot come into injurious Ycontact with the engineeror other person in the vicinity. Y

The'ob'ects of the invention are,'frst, t0 provide such an inclosing` means or protector that it may-be removedY bodily from the gage without disturbing the gage connections with the-boiler; second, to render the 'interior readily accessible for repairs and clean`ng, and third, to conteract tendencies to ,Sere-ad apart! y V The invention consists, as hereinafter more fully explainedand claimed, of a protector or shield preferably made as a three- Sded frame, having gemdur-@Hines the panes of glass'being'fitted in pockets in the frame an'dfheld therein by removable strips 4of metal extending lengthwise ofthe frame and serving as icla'mps to hold the panes in liee' in aSilbSH-intally leak-,tight Way- YThe Yinvention also consists, likewise as hereinafter more tally ,explained and claimedQA of a gage glass holder of skeleton form adapted -to receive the protector 01' shield'Y last referred to in such way-as to admii-l of Vthe bodily removability of the protector or shield without disturbingthe boiler connections of the fholder, and cooperating with the rotectororl shield so aste tie them toeth eetuiialllv and brathm laterallyV "In'the accompanying drawings illustrating the invention, in thel several figures of nieuwe taste similarly designata, ,tiene 11s a 'sistemica-rig. ,21s a longitudinalsectionQand Fig. 3 is a cross-section on lineA B,'Fig.` 2,' ofa protector showing one embodiment'of the principle and conu struction of the invention. is a cross section af the' skelet@ holder, and Fis 5 is views being taken in the same plane as Fig. 8. Fig. 6 is a perspective view of the exhaust connection. Fig. 7 is a perspective view of the skeleton holder with the glass gage tube in place. F ig. 8 is a perspective view of the glazed frame.

The glazed frame consituting the protector or shield, as shown detached in Figs. 5 A and 8, has the three pocketed sides 1, 2 and 3,

`panes or strips 9 so as to close the openings.

These panes are preferably heavy and specially made. These panes yare `secured in the pockets by longitudinal metal strips l0 arranged inside the frame and adapted to The side or front 2 has y engage the edges of adjacent panes, and held Y from outside the frame. rlhese clamping strips may be provided with lateral wings as shown in Fig. 2, or they may be of uniform width throughout or of any other construction that requires the removal of all of their fastening 'screws in order to remove the panes of glass. In order to adord flat rests for the screw heads the angles between the vin placel by screws ll screwed into them sides may have the seats l2, and these seats Y Y.

may be screwthreaded to receive the screws.

Thef frame composed of the parts described, excluding of course the clamping strips 10, screws, and glass, may be and preferably is a single unitary casting, and with its panes of glass in place may be applied to andremoved from the holder bodily.

The holder may be variously constructed, but a simple andjeflicient holder is herein shown as comprising a back 13 provided with the forwardly extending longitudinal taper flanges 14 to coperate with the like flanges 6 of the frame; the top and bottom seats 15 to coperate with the top and loottoin openings 'of the the tubular ioo bosses 16 to receive the water gage glasstube 17 and counterbored and screwthreaded to receive the boiler connections, only the upper boiler-connection 18 being shown; the two horizontal-ly extending screwthreaded projections 19 and the taper dovetail 20 to receive the flange 21 of the exhaust tube 22. The back 13 is provided with an opening provided with a registering opening 21 for the escape of fine particles of glass and the free steam resulting from the breaking of y the water glass.

`The water glass may be set steam and water tight in the bosses 16 by means of gaskets 25 or other packing means.

' As will be observed by reference especially to Figs. 7 and 8, both the holder and the glazed frame are self-contained, and the latter is capable of being Vbodily applied to and removed from the holder.

,. The glazed frame is applied to the holder by slipping it in between the bosses 16 so that its top and bottom openings register with and engage the seats 15 on'said bosses and the lianges 6 engage the flanges 14;, and lthen the frame and holder are united by means of screws or bolts 26 applied to the lugs 8 and engaging the screwthreaded pro- Ail() jections 19. Preferably lock-washers 27 are interposed between the heads of the screws or. bolts 26 and the lugs 8 to prevent said screws or bolts from workingv loose. By thus positively connecting the glazed frame with the holder at top and bottom, a very secure tie is made that prevents the bosses 16 from spreading when under pressure. The anges 6 and 11 so interlock as to brace the frame against spreading laterally. Thus provisionV is made to meet all of the exigencies of service. The metal-to-metal lit of the parts of the frame-and the holder is such that no packing is required to make the device substantially steam tight.

The broken Vglass and the steam entering the exhaust connection 22 is conveyed away by the pipe 28.

' While I prefer to use a three-sided glazed frame, If do not restrict my invention thereto, but reserve the right to use a glazed kframe'having any `number of sides. And so also other variations 1n construction-are y esteemed to be within the spirit and Scope v ets, and one piece strips running lengthwise of the panes of glass inside the frame and engaging the edges of adjacent panes,

" and `screws mounted in the frame and engaging the said strips.

aback, panes ofglass-,in-said pockets, lon.-

2. In a protector forwater gages, a onepiece three-sided frame 'having pockets projecting. laterally therefrom, and an open gitudinally arranged strips engaging'the in- 70 side edges Yof adjacent panes of glass, and means to fasten said strips in place to clamp n the panesof glass in position. 23 and the exhaust ltubes flange 21 1s also f 3. Ina protector for water gages,` aonepiece threesided frame having pocketsV projecting laterally therefrom and an open back, said pockets beingopen outside. and inside and closed at topand bottom, panes of glass in said pockets, .longitudinally arranged strips engaging the inside edges of adjacent panes of glass, and screws engaging the frame and strips to clamp the panes of glass in position. A y

1. In a protector for water gages, a onepiece glazed frame having laterally offset 85 pockets closed at top land bottom and provided with longitudinal openings which are covered by the panes ofglass, and an open back provided with longitudinal taper' flanges extendingthelength o f the frame, combined with a holder having complementary longitudinal taper flanges I engaging therewith. r f

Ypiece three-sided. frame having pockets vprojecting laterally* therefrom, andan open l back providedYV with longitudinal taper flangesto engage a" suitable holder, panes of glass in' said pockets, longitudinally arranged strips engaging the inside .edges of adjacent panes of glass, and means to fasten saidstrip's in place to clamp the panes of glass inA position. J

6. In a protectorfor water gages, 'a selfcontained protecting frame having top and bottom openings, and a selfcontained holder provided withend bosses adapted to receive a gagetube, and seats on said bosses adapted to receive the protecting frame by slipping itin bodily between the bosses. j 1110 7.-A protector for water gages, compris- Ving a glazed frame having-'openings at top and bottom and an open back flanked 'by longitudinal. taper flanges, and -arholderfor saidglazedframehaving thegageY glass, top and bottom bosses providedv with seats ,to` fit inand close the open top and bottom ofthe r`frame, anda back provided with longitudinal taper flanges to coperate with the flanges of the frame to brace theframe against lateral spreading. 8. A protector for water gages, comprising a glazedframe havingopenings at top and bottom and an open back-flanked by longitudinal taper anges, and a lhol'der'for l2@ said glazedframe havingfthe-gage' glass, Ytop and bottom bosses provided with seats to fit in and close the open top and bottom of the frame, and a back providedwith lonanges of the frame to brace the frame In testimony whereof I have hereunto set agaiist lateral spraging, seiddfrtlrm1 havmy hand this 2nd day of July A. D. 1917. ing ugs at top en ottom an t e older having projections at top and bottom, and FRANK W EDWARDS' 5 means to connect seid lugs and projections to Witnesses:

tie the top and bottom bosses together and FRANK W. FURRY, to unite the frame and holder. GEORGE M. DIGKsoN. Y

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C. 

